Digitizing sponsorInternet-Wide Scan Data Repository
The Critical.IO project was designed to uncover large-scale vulnerabilities across the global IPv4 internet. The project scanned a number of ports across the entire IPv4 address space between May 2012 and March 2013. The current dataset contain a monthly snapshot of each unique service response found on each responsive host. In the cases of services where a unique response is received for each request (HTTP, due to Date headers, etc), each of these will be represented as a unique record in one of the monthly JSON exports.